As well as the regular ChrisTrains for MSTS, in 2005 a fan converted a lot of my trains to run in Chris Sawyer's excellent Locomotion game. You can download the Locomotion Add-on here.

Credit where it's due. This pack would not see the light of day without the following people:
Vehicle conversion by Shifty Powers (www.tt-forums.net).
Bas de Bruijn for his Photo-Sprinters.
Hein de Vries for his NS 2400 (www.supersim.com).
Scrat for his program "Vehicle Creator".
Mek, for the Locomod data installer. http://www.tt-forums.net/viewtopic.php?t=11331)